CA1111290A - Strip of joined fastening elements and method for its manufacture - Google Patents
Strip of joined fastening elements and method for its manufactureInfo
- Publication number
- CA1111290A CA1111290A CA315,130A CA315130A CA1111290A CA 1111290 A CA1111290 A CA 1111290A CA 315130 A CA315130 A CA 315130A CA 1111290 A CA1111290 A CA 1111290A
- Authority
- CA
- Canada
- Prior art keywords
- fastening elements
- strip
- heads
- nails
- head
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 14
- 238000000034 method Methods 0.000 title claims description 9
- 238000003466 welding Methods 0.000 claims abstract description 11
- 241000587161 Gomphocarpus Species 0.000 description 8
- 238000005304 joining Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 230000035508 accumulation Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 241000272470 Circus Species 0.000 description 1
- 241001417935 Platycephalidae Species 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000000789 fastener Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B15/00—Nails; Staples
- F16B15/08—Nails; Staples formed in integral series but easily separable
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25C—HAND-HELD NAILING OR STAPLING TOOLS; MANUALLY OPERATED PORTABLE STAPLING TOOLS
- B25C1/00—Hand-held nailing tools; Nail feeding devices
- B25C1/001—Nail feeding devices
- B25C1/005—Nail feeding devices for rows of contiguous nails
Abstract
ABSTRACT
A strip of nails or other fastening elements for use in a suitable driving machine is made by resistance-welding together a number of fastening elements. For example, the heads of adjacent nails may overlap and be resistance-welded together through protuberances on the undersides of the heads.
A strip of nails or other fastening elements for use in a suitable driving machine is made by resistance-welding together a number of fastening elements. For example, the heads of adjacent nails may overlap and be resistance-welded together through protuberances on the undersides of the heads.
Description
This invention relates to a s-trip of joined fastening elements, such as nails, pins or screws for use in a suitable fastener-driving machine, and a method for its manufacture.
A number of proposals have been made for -the construction of strips of joined fastening elements for use in driving machinesO ~he use of adhesively-coated paper strips, for example, which are arranged between the fastening elements, is generally known. It is also lO known to use plastics strips interconnecting fastening elements as described in German Specification DT-AS 1 478 888.
As well as using narrow plas-tics strips for this purpose wider strips are also used, into which the fastening elements are inserted. Also generally known is the 15 manufacture of strips of nails which are simply joined together by adhesive, as described in German Specification D~-PS l 808 604 and the use of wire which is glued or welded to the nails in order to form a nail strip, as described in German Specification DT-AS l 603 970~
All the fastener strips of the prior art referred to above have the disadvantage that the strips require additional supporting or connecting elements respectively for their use in the magazine of a fastener-driving machine, which in turn means an additional worklng 25 operation and apparatus for the manufacture of the strips.
A further disadvantage is that in the use of such fastener strips in which the fastening elernents are interconnected by support elements, after a fastening element has been driven home, the associated connecting or support elements have to be freed from the rest of the -fastening element strip and from -the driving machine. The con-necting or support elements of spent strips of fastening elements can often lead to jamming or malfunctioning of the machine. Particles of tile connect-ing or support elements may be expelled during the operation of the machine and can prove dangerous. In consequence, the driving machines have to be serviced frequently. The same applies to machines used for manufacturing fastener strips, the maintenance of such machines being time-consuming.
Another known type of fastening element strip is described in German lltility Model Specification No. 1 678 659, in which a strip of nails is described which is formed by directly joining the whole length of the shank of a nail, by means of glueing, soldering or spot welding to adjoining nails in a strip. This requires, however, specially designed nail heads with only a small impact area and joining together of nails by spot welding neces-sitates the use of contact rollers, which means increased manufacturing com-plexity.
It is the object of the present invention to provide a simplified method of manufacture for the strips of fastening elements, without requiring modification o the heads of the elements, and avoiding the disadvantages referred to above.
This invention relates to a strip of joined fasterling elements for use in a fastener-driving machine comprising a multiplicity of interconnected fastening elements, each of which has a head at one end thereof, and a shank at the opposite end thereof, said shanks being substantially parallel to one another and said heads each having at least one protuberance formed thereon which is resistance welded to the hcad of an adjacent fastening e]ement to form a spot weld connection and so as to achieve a stepped, overlapping rela-tionship of said strip of fastening elements for permitting loading in a fastener-driving machine.
This invention further relates to a method for the manufacture of a strip of joined fastening elements for use in fastener-driving machines, i,,"
which fastening elements have a head at one end thereof and a shank at the other thereof, comprising the steps of forming at least one protuberance on the heads of a multip].icity of Eastening elements arranging said fastening elements in a strip with the shanks thereof substantially parallel to one another and with the heads thereof arranged in a stepped, overlapping rela-tionship wi-th the protuherance on each head of the fasteni.ng clements being in abutment with the head of a successive adjacent fastening element and resistance-welding adjacent nails of said strip together i.n the area of said protuberances so as to form a stepped strip of fastening elements ready for loading in a fastener-driving machine.
,~,'1 ~ - 3a -iQ~
According to the invention there is provided a method for the mamlfacture of a strip of joined fastening elements, svch as nails, pins, screws or the like for use in fas-tener driving machines, wherei-l the fastening elements, after assembly into a strip, are connected together by means of a resistance welding operation. For the purpose of joining the fastenin~ elements -together by resis-tance welding it is particularly advantageous -to provide each fastening element with a protuberance or material accumulation at the site of each eventl1al welded connection.
~his material protuberance can have a part-spherical shape or it can have any suitable shape for -the formation of a weld connection~ A number of protuberances may be distributed evenly around the circumference of each fastening element hlternatively1 a single protuberance may extend circumferentially around the fastening element.
~he fastening elements could alternatively be provided with protuberances in the form of radial ribs.
The manufacturing cost of strips of fastening elements, in particular nail strips, in accordance wi-th the method of this invention can be substantially reduced~ because there is no need to provide any separate supplementary connecting element or equipment to form the connections J the protuberances being formed integrally with -the fastening elements. ~onsequently the machines used for the manufacture of the strips of fastening elements are cheaper than those which employ separate strips SUCll as plastics strips as connectors. Furthermore, the manufacture of the fastening element strips accordlng -lio this invention i5 clean, since -there is ro residue, and fouling of the manufacturing equipment is avoided. Since, rnoreover~
5 no residue is formed when the fastening elernents are used, the fastener driving rnachine does not expel debris or particles, so tha-t it is safer in useO lhus during both the manufacture of the strips and their use -the place of work can be kep-t clean.
1~ lhe provision on each fastening element of a number of hemispherical material accumulations or protuberances, distribu-iied evenly around -the circumference of the element, avoids the need to orientate the elements relative to each other circu~ferentially before in-ter-15 connecting them to form a strip.
The invention will be further described, by way of example 9 with reference to the accompanying diagrammatic drawings in which:
Figure 1 is a side elevation of a nail strip according 20 to one embodiment of the invention;
Figure 2 is a side elevation on an enlarged scale of the head end of one of the nails forming part of the strip shown in Figure l;
Figure 3 is an end view of a nail for use in another 25 embodirnent of the invention~ viewed from the pointed end;
Figure 4 is a side elevation of the head end of the nail shown in Figure 3;
Figure 5 is an end view from the pointed end of a nail for use in another embodiment of the invention;
Fig~lre ~ ls a side elevation of the head end of the nail shown in Fig~re 5~ and Fig~re 7 is an end view from the pointed end of a nail I`or use in a f`urther ernbodiment of the invention.
Figure 1 shows a number of parallel nails 1 having flat heads 2 which overlap each other like roofing tiles, forming a flat s-trip of nails the tips of which lie on a straight line which is inclined to the longitudinal axes of the nails. ~he overlapping heads 2 of adjacent nails 1 are joined together by spot welds 3 formed by resistance welding. In order to simplify the resistance-welding process, a protuberance 4 of hemispherical shape is provided on the underside of each nail head 29 as sh0wn in Figure 2, the protuberance 4 being formed at 1~ the same time as the nail 1. ~he protuberances 4 may have alternative profiles J for example triangular or cylindrical shapes. When a welding current is passed between the overlapping nail heads 2, using suitable contact rollers, the curren-t passes through the~protuberances 4, which form the spot welds 30 ; Instead of just one protuberance 4, it is better to provide several protuberances 4 distributed evenly on the underside of each nail head 2, as illustrated in ~igures 3 and 4f in which five protuberances 4 are provided at equal circumferential intervals on the underside of the nail head 2. ~his avoids the need to sort and orientate the nails when arranging them into a strip before the welding process.
:
,:
An alternative for~rl of nail suitable for the formation of a welded nail strip is shown in Figures 5 and 6, in which an annular rib 5 is formed on the underside of the nail head 2 concentrically with the nail point. A part 5 of each rib 5 would f`orm a weld when the nails were assembled illtO a s-trip with -their heads 2 overlapping, as illustrated in Figure 1.
A further alternative is shown in Figure 7, in which protuberances in the shape of radial ribs 6 are formed 10 on the underside of the nail head 2. One of the ribs 6 would f`orm a weld when overlapping nail heads 2 were welded together to form a strip of the kind illus,,rated in Figure 1~
A number of proposals have been made for -the construction of strips of joined fastening elements for use in driving machinesO ~he use of adhesively-coated paper strips, for example, which are arranged between the fastening elements, is generally known. It is also lO known to use plastics strips interconnecting fastening elements as described in German Specification DT-AS 1 478 888.
As well as using narrow plas-tics strips for this purpose wider strips are also used, into which the fastening elements are inserted. Also generally known is the 15 manufacture of strips of nails which are simply joined together by adhesive, as described in German Specification D~-PS l 808 604 and the use of wire which is glued or welded to the nails in order to form a nail strip, as described in German Specification DT-AS l 603 970~
All the fastener strips of the prior art referred to above have the disadvantage that the strips require additional supporting or connecting elements respectively for their use in the magazine of a fastener-driving machine, which in turn means an additional worklng 25 operation and apparatus for the manufacture of the strips.
A further disadvantage is that in the use of such fastener strips in which the fastening elernents are interconnected by support elements, after a fastening element has been driven home, the associated connecting or support elements have to be freed from the rest of the -fastening element strip and from -the driving machine. The con-necting or support elements of spent strips of fastening elements can often lead to jamming or malfunctioning of the machine. Particles of tile connect-ing or support elements may be expelled during the operation of the machine and can prove dangerous. In consequence, the driving machines have to be serviced frequently. The same applies to machines used for manufacturing fastener strips, the maintenance of such machines being time-consuming.
Another known type of fastening element strip is described in German lltility Model Specification No. 1 678 659, in which a strip of nails is described which is formed by directly joining the whole length of the shank of a nail, by means of glueing, soldering or spot welding to adjoining nails in a strip. This requires, however, specially designed nail heads with only a small impact area and joining together of nails by spot welding neces-sitates the use of contact rollers, which means increased manufacturing com-plexity.
It is the object of the present invention to provide a simplified method of manufacture for the strips of fastening elements, without requiring modification o the heads of the elements, and avoiding the disadvantages referred to above.
This invention relates to a strip of joined fasterling elements for use in a fastener-driving machine comprising a multiplicity of interconnected fastening elements, each of which has a head at one end thereof, and a shank at the opposite end thereof, said shanks being substantially parallel to one another and said heads each having at least one protuberance formed thereon which is resistance welded to the hcad of an adjacent fastening e]ement to form a spot weld connection and so as to achieve a stepped, overlapping rela-tionship of said strip of fastening elements for permitting loading in a fastener-driving machine.
This invention further relates to a method for the manufacture of a strip of joined fastening elements for use in fastener-driving machines, i,,"
which fastening elements have a head at one end thereof and a shank at the other thereof, comprising the steps of forming at least one protuberance on the heads of a multip].icity of Eastening elements arranging said fastening elements in a strip with the shanks thereof substantially parallel to one another and with the heads thereof arranged in a stepped, overlapping rela-tionship wi-th the protuherance on each head of the fasteni.ng clements being in abutment with the head of a successive adjacent fastening element and resistance-welding adjacent nails of said strip together i.n the area of said protuberances so as to form a stepped strip of fastening elements ready for loading in a fastener-driving machine.
,~,'1 ~ - 3a -iQ~
According to the invention there is provided a method for the mamlfacture of a strip of joined fastening elements, svch as nails, pins, screws or the like for use in fas-tener driving machines, wherei-l the fastening elements, after assembly into a strip, are connected together by means of a resistance welding operation. For the purpose of joining the fastenin~ elements -together by resis-tance welding it is particularly advantageous -to provide each fastening element with a protuberance or material accumulation at the site of each eventl1al welded connection.
~his material protuberance can have a part-spherical shape or it can have any suitable shape for -the formation of a weld connection~ A number of protuberances may be distributed evenly around the circumference of each fastening element hlternatively1 a single protuberance may extend circumferentially around the fastening element.
~he fastening elements could alternatively be provided with protuberances in the form of radial ribs.
The manufacturing cost of strips of fastening elements, in particular nail strips, in accordance wi-th the method of this invention can be substantially reduced~ because there is no need to provide any separate supplementary connecting element or equipment to form the connections J the protuberances being formed integrally with -the fastening elements. ~onsequently the machines used for the manufacture of the strips of fastening elements are cheaper than those which employ separate strips SUCll as plastics strips as connectors. Furthermore, the manufacture of the fastening element strips accordlng -lio this invention i5 clean, since -there is ro residue, and fouling of the manufacturing equipment is avoided. Since, rnoreover~
5 no residue is formed when the fastening elernents are used, the fastener driving rnachine does not expel debris or particles, so tha-t it is safer in useO lhus during both the manufacture of the strips and their use -the place of work can be kep-t clean.
1~ lhe provision on each fastening element of a number of hemispherical material accumulations or protuberances, distribu-iied evenly around -the circumference of the element, avoids the need to orientate the elements relative to each other circu~ferentially before in-ter-15 connecting them to form a strip.
The invention will be further described, by way of example 9 with reference to the accompanying diagrammatic drawings in which:
Figure 1 is a side elevation of a nail strip according 20 to one embodiment of the invention;
Figure 2 is a side elevation on an enlarged scale of the head end of one of the nails forming part of the strip shown in Figure l;
Figure 3 is an end view of a nail for use in another 25 embodirnent of the invention~ viewed from the pointed end;
Figure 4 is a side elevation of the head end of the nail shown in Figure 3;
Figure 5 is an end view from the pointed end of a nail for use in another embodiment of the invention;
Fig~lre ~ ls a side elevation of the head end of the nail shown in Fig~re 5~ and Fig~re 7 is an end view from the pointed end of a nail I`or use in a f`urther ernbodiment of the invention.
Figure 1 shows a number of parallel nails 1 having flat heads 2 which overlap each other like roofing tiles, forming a flat s-trip of nails the tips of which lie on a straight line which is inclined to the longitudinal axes of the nails. ~he overlapping heads 2 of adjacent nails 1 are joined together by spot welds 3 formed by resistance welding. In order to simplify the resistance-welding process, a protuberance 4 of hemispherical shape is provided on the underside of each nail head 29 as sh0wn in Figure 2, the protuberance 4 being formed at 1~ the same time as the nail 1. ~he protuberances 4 may have alternative profiles J for example triangular or cylindrical shapes. When a welding current is passed between the overlapping nail heads 2, using suitable contact rollers, the curren-t passes through the~protuberances 4, which form the spot welds 30 ; Instead of just one protuberance 4, it is better to provide several protuberances 4 distributed evenly on the underside of each nail head 2, as illustrated in ~igures 3 and 4f in which five protuberances 4 are provided at equal circumferential intervals on the underside of the nail head 2. ~his avoids the need to sort and orientate the nails when arranging them into a strip before the welding process.
:
,:
An alternative for~rl of nail suitable for the formation of a welded nail strip is shown in Figures 5 and 6, in which an annular rib 5 is formed on the underside of the nail head 2 concentrically with the nail point. A part 5 of each rib 5 would f`orm a weld when the nails were assembled illtO a s-trip with -their heads 2 overlapping, as illustrated in Figure 1.
A further alternative is shown in Figure 7, in which protuberances in the shape of radial ribs 6 are formed 10 on the underside of the nail head 2. One of the ribs 6 would f`orm a weld when overlapping nail heads 2 were welded together to form a strip of the kind illus,,rated in Figure 1~
Claims (6)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A strip of joined fastening elements for use in a fastener-driving machine comprising:
a multiplicity of interconnected fastening elements, each of which has a head at one end thereof, and a shank at the opposite end thereof, said shanks being substantially parallel to one another and said heads each having at least one protuberance formed thereon which is resistance welded to the head of an adjacent fastening element to form a spot weld connection and so as to achieve a step-ped, overlapping relationship of said strip of fastening elements for permitting loading in a fastener-driving machine.
a multiplicity of interconnected fastening elements, each of which has a head at one end thereof, and a shank at the opposite end thereof, said shanks being substantially parallel to one another and said heads each having at least one protuberance formed thereon which is resistance welded to the head of an adjacent fastening element to form a spot weld connection and so as to achieve a step-ped, overlapping relationship of said strip of fastening elements for permitting loading in a fastener-driving machine.
2. The strip according to claim 1, wherein said at least one protuber-ance comprises a raised circumferential protuberance, a part of which forms the spot weld connection.
3. The strip according to claim 2, wherein a plurality of said raised protuberances are evenly distributed over the underside of said heads of said fastening elements.
4. The strip according to claim 1, wherein said fastening elements com-prise nails and said at least one protuberance is formed on the underside of each of said nails.
5. The strip according to claim 4, wherein said at least one protuber-ance comprises a plurality of radial ribs formed on the underside of said heads of said nails.
6. A method for the manufacture of a strip of joined fastening elements for use in fastener-driving machines, which fastening elements have a head at one end thereof and a shank at the other thereof, comprising the steps of:
forming at least one protuberance on the heads of a multiplicity of fastening elements;
arranging said fastening elements in a strip with the shanks thereof substantially parallel to one another and with the heads thereof arranged in a stepped, overlapping relationship with the protuber-ance on each head of the fastening elements being in abutment with the head of a successive adjacent fastening element; and resistance-welding adjacent nails of said strip together in the area of said protuberances so as to form a stepped strip of fastening elements ready for loading in a fastener-driving machine.
forming at least one protuberance on the heads of a multiplicity of fastening elements;
arranging said fastening elements in a strip with the shanks thereof substantially parallel to one another and with the heads thereof arranged in a stepped, overlapping relationship with the protuber-ance on each head of the fastening elements being in abutment with the head of a successive adjacent fastening element; and resistance-welding adjacent nails of said strip together in the area of said protuberances so as to form a stepped strip of fastening elements ready for loading in a fastener-driving machine.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEP2748952.7 | 1977-11-02 | ||
| DE19772748952 DE2748952A1 (en) | 1977-11-02 | 1977-11-02 | STRIP OF INTERCONNECTED FASTENERS AND METHOD OF ITS MANUFACTURING |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1111290A true CA1111290A (en) | 1981-10-27 |
Family
ID=6022799
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA315,130A Expired CA1111290A (en) | 1977-11-02 | 1978-10-31 | Strip of joined fastening elements and method for its manufacture |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US4194621A (en) |
| CA (1) | CA1111290A (en) |
| DE (1) | DE2748952A1 (en) |
| GB (1) | GB2009081B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL9101725A (en) * | 1991-10-16 | 1993-05-17 | Klaas Willem De Groot | METHOD AND APPARATUS FOR MANUFACTURING A NAIL ELEMENT |
| US5380250A (en) * | 1993-03-01 | 1995-01-10 | Dion; Jean-Paul | Frangible joints for frangible band of wires or strip of fasteners |
| US5924830A (en) * | 1993-04-15 | 1999-07-20 | De Groot; Klaas Willem | Nail element and method for its manufacture |
| US7090455B2 (en) * | 1998-11-13 | 2006-08-15 | Pneutools, Incorporated | Stacked assembly of roofing caps |
| US20060042051A1 (en) * | 2004-08-27 | 2006-03-02 | Irwin Jere F | Strips of clips and clip |
| US9915282B2 (en) | 2012-06-06 | 2018-03-13 | Pneutools, Incorporated | Stacked caps with connecting stems |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1228789A (en) * | 1909-11-05 | 1917-06-05 | Universal Electric Welding Co | Metal fabric. |
| US1440579A (en) * | 1920-03-22 | 1923-01-02 | United Shoe Machinery Corp | Nail and nail string |
| US2208835A (en) * | 1937-05-10 | 1940-07-23 | Patrick L Denovan | Harrow tooth and supporting bar therefor |
| US2366510A (en) * | 1943-02-22 | 1945-01-02 | Adolph Reader | Rivet string |
| US2999146A (en) * | 1957-12-04 | 1961-09-05 | Poly Ind Inc | Fluid-pervious sheet material |
| US3481459A (en) * | 1968-04-19 | 1969-12-02 | Senco Products | Nails in strip form |
| DE1912695A1 (en) * | 1969-03-13 | 1970-09-24 | Schnabel Walter | Rivet strips for an impact device |
| GB1341836A (en) * | 1970-06-27 | 1973-12-25 | Lucas Industries Ltd | Method of resistance welding together a plurality of metallic laminations |
| CA971010A (en) * | 1972-01-14 | 1975-07-15 | Signode Corporation | Nail strip and method of making same |
| US3835991A (en) * | 1972-09-15 | 1974-09-17 | Senco Products | Nail and method and apparatus for making same |
-
1977
- 1977-11-02 DE DE19772748952 patent/DE2748952A1/en not_active Withdrawn
-
1978
- 1978-10-30 GB GB7842437A patent/GB2009081B/en not_active Expired
- 1978-10-31 CA CA315,130A patent/CA1111290A/en not_active Expired
- 1978-10-31 US US05/956,451 patent/US4194621A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| GB2009081A (en) | 1979-06-13 |
| US4194621A (en) | 1980-03-25 |
| GB2009081B (en) | 1982-10-20 |
| DE2748952A1 (en) | 1979-05-03 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |